export default function(){
    let arr =[
        {
            id: '1',
            title: 'parent 1',
            expand: true,
            children: [
                {
                    id: '2',
                    title: 'parent 1-1',
                    expand: true,
                    children: [
                        {
                            id: '3',
                            title: 'leaf 1-1-1'
                        },
                        {
                            id: '4',
                            title: 'leaf 1-1-2'
                        }
                    ]
                },
                {
                    id: '5',
                    title: 'parent 1-2',
                    expand: true,
                    children: [
                        {
                            id: '6',
                            title: 'leaf 1-2-1'
                        },
                        {
                            id: '7',
                            title: 'leaf 1-2-1'
                        }
                    ]
                }
            ]
        }
    ]
    return arr;
}
